The First Virtue: Double Helix #6 (Star Trek: The Next Generation Book 56)

An insidious plot for revenge has spanned several years in the life of Jean-Luc Picard, but how did this merciless vendetta get started? Like a double helix curling back on itself, the final answer lies at the very beginning...
A series of terrorist attacks have heightened tensions between two alien races, bringing an entire sector to the brink of interplanetary war. While Picard, captain of the U.S.S. Stargazer, struggles to keep the peace, Lieutenant Commander Jack Crusher must team up with a Vulcan officer named Tuvok to uncover the hidden architect of the attacks, but the outcome of their quest would breed dire consequences for the future.